US11653078B2 - Optical device with a flexible heating element - Google Patents

Optical device with a flexible heating element Download PDF

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Publication number
US11653078B2
US11653078B2 US16/442,623 US201916442623A US11653078B2 US 11653078 B2 US11653078 B2 US 11653078B2 US 201916442623 A US201916442623 A US 201916442623A US 11653078 B2 US11653078 B2 US 11653078B2
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United States
Prior art keywords
circuit board
printed circuit
wall
lens holder
heater band
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Active, expires
Application number
US16/442,623
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US20190381939A1 (en
Inventor
Arkadiusz Rafalowski
Witold Poreda
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Aptiv Technologies AG
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Aptiv Technologies Ltd
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Assigned to APTIV TECHNOLOGIES LIMITED reassignment APTIV TECHNOLOGIES LIMITED ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: POREDA, WITOLD, RAFALOWSKI, Arkadiusz
Publication of US20190381939A1 publication Critical patent/US20190381939A1/en
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Assigned to APTIV TECHNOLOGIES (2) S.À R.L. reassignment APTIV TECHNOLOGIES (2) S.À R.L. ENTITY CONVERSION Assignors: APTIV TECHNOLOGIES LIMITED
Assigned to APTIV MANUFACTURING MANAGEMENT SERVICES S.À R.L. reassignment APTIV MANUFACTURING MANAGEMENT SERVICES S.À R.L. MERGER Assignors: APTIV TECHNOLOGIES (2) S.À R.L.
Assigned to Aptiv Technologies AG reassignment Aptiv Technologies AG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: APTIV MANUFACTURING MANAGEMENT SERVICES S.À R.L.
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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/50Constructional details
    • H04N23/55Optical parts specially adapted for electronic image sensors; Mounting thereof
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R1/00Optical viewing arrangements; Real-time viewing arrangements for drivers or passengers using optical image capturing systems, e.g. cameras or video systems specially adapted for use in or on vehicles
    • B60R1/02Rear-view mirror arrangements
    • B60R1/06Rear-view mirror arrangements mounted on vehicle exterior
    • B60R1/0602Rear-view mirror arrangements mounted on vehicle exterior comprising means for cleaning or deicing
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/0006Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 with means to keep optical surfaces clean, e.g. by preventing or removing dirt, stains, contamination, condensation
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • G02B7/028Mountings, adjusting means, or light-tight connections, for optical elements for lenses with means for compensating for changes in temperature or for controlling the temperature; thermal stabilisation
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B17/00Details of cameras or camera bodies; Accessories therefor
    • G03B17/02Bodies
    • G03B17/12Bodies with means for supporting objectives, supplementary lenses, filters, masks, or turrets
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B17/00Details of cameras or camera bodies; Accessories therefor
    • G03B17/55Details of cameras or camera bodies; Accessories therefor with provision for heating or cooling, e.g. in aircraft
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/50Fixed connections
    • H01R12/59Fixed connections for flexible printed circuits, flat or ribbon cables or like structures
    • H01R12/62Fixed connections for flexible printed circuits, flat or ribbon cables or like structures connecting to rigid printed circuits or like structures
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/50Constructional details
    • H04N23/52Elements optimising image sensor operation, e.g. for electromagnetic interference [EMI] protection or temperature control by heat transfer or cooling elements
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/50Constructional details
    • H04N23/54Mounting of pick-up tubes, electronic image sensors, deviation or focusing coils
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00Ohmic-resistance heating
    • H05B3/02Details

Definitions

  • This disclosure generally relates to an optical device for a vehicle and more particularly to an optical device comprising a heating element.
  • Electronic members for a motor vehicle that are arranged on the exterior of the vehicles must be subject to environmental constraints such as cold and ice. In order not to suffer the persistent effects of these constraints, these electronic members are generally equipped with electrical devices allowing to get rid of the effects of these constraints. For example, electronic members equipped with electrical devices can be found such as for example heating elements for fighting frost.
  • These electrical devices are generally piloted by means of wiring harnesses and connectors connecting an electronic control board and the electrical devices.
  • An optical device comprises a rigid printed circuit board including an electronic image-capture circuit; a lens holder comprising at least one optical lens, the lens holder comprising a wall forming a cavity extending along the optical axis of the device from its top end to its bottom end, the bottom end being mounted on the rigid main portion of the printed circuit board so as to align, along the optical axis of the device, the electronic image-capture circuit and the optical lens; the optical device further comprises a flexible heater band arranged in contact with the wall of the lens holder and around the wall of the lens holder, the heater band comprising an electrical connection means electrically connected to at least one rigid printed circuit board of the optical device.
  • the electrical connection means may be electrically connected to the rigid printed circuit board including the electronic image-capture circuit.
  • the two longitudinal ends of the heater band comprise attachment means that can clamp the heater band against the wall of the lens holder.
  • the attachment means may comprise an elastic portion so as to fit to the profile of the wall of the lens holder.
  • the heater band comprises electrical conductors configured to be traversed by an electric current coming from the printed circuit board.
  • the heater band may be formed by a flexible-type printed circuit board.
  • the electrical connection means may be a connection of the flexible printed circuit board type, in substrate continuity with the heater band.
  • the electrical connection means may comprise a thinned portion of the substrate of the rigid printed circuit board.
  • a method for assembling an optical device includes the following steps: providing a lens holder including at least one optical lens and comprising a wall forming a cavity extending along the optical axis of the device; providing a rigid printed circuit board comprising an electronic image-capture component; arranging the rigid printed circuit board on the lens holder so as to be able to align, along the optical axis of the device, the electronic image-capture circuit and the optical lens; providing a flexible heater band including an electrical connection means and attachment means; electrically connecting the electrical connection means to the rigid printed circuit board; arranging the heater band around the wall of the lens holder; and holding the heater band against the wall of the lens holder via the attachment means of the heater band.
  • the step of providing the rigid printed circuit board, the step of providing the heater band and the step of electrically connecting the electrical connection means to the rigid printed circuit board may be substituted by a single step of providing a single printed circuit board comprising a rigid main printed circuit board including the electronic image-capture component, and comprising a flexible printed circuit board including the flexible heater band and including an extension forming the electrical connection means, said flexible printed circuit board being in substrate continuity of the rigid main part.
  • FIG. 1 is a schematic perspective view of the optical device according to the invention.
  • FIG. 2 is a schematic perspective exploded view of the optical device of FIG. 1 ;
  • FIG. 3 is a first partial schematic perspective view in cross section of the optical device of FIG. 1 illustrating the heater band arranged on the lens holder;
  • FIG. 4 is a partial schematic perspective view in cross section of the optical device of FIG. 1 illustrating a first embodiment of attachment means of the heater band arranged on the lens holder;
  • FIG. 5 is another partial schematic perspective view in cross section of the optical device of FIG. 1 illustrating a second embodiment of attachment means of the heater band arranged on the lens holder;
  • FIGS. 6 , 7 , 8 and 9 are schematic perspective views of four steps of assembling the heating device on the lens holder the optical device according to the invention.
  • One or more includes a function being performed by one element, a function being performed by more than one element, e.g., in a distributed fashion, several functions being performed by one element, several functions being performed by several elements, or any combination of the above.
  • first, second, etc. are, in some instances, used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another.
  • a first contact could be termed a second contact, and, similarly, a second contact could be termed a first contact, without departing from the scope of the various described embodiments.
  • the first contact and the second contact are both contacts, but they are not the same contact.
  • the term “if” is, optionally, construed to mean “when” or “upon” or “in response to determining” or “in response to detecting,” depending on the context.
  • the phrase “if it is determined” or “if [a stated condition or event] is detected” is, optionally, construed to mean “upon determining” or “in response to determining” or “upon detecting [the stated condition or event]” or “in response to detecting [the stated condition or event],” depending on the context.
  • an orthogonal reference frame comprising a longitudinal axis L, a transverse axis T and a vertical axis V is defined. “Bottom”, “top”, “above”, “below”, “lower” and “upper” orientations are defined along the vertical direction. “Left”, “right” and “lateral” orientations are defined according to the transverse direction. “Front” and “rear” orientations are also defined along the longitudinal direction.
  • an optical device 10 more particularly a camera for a vehicle is represented.
  • This type of camera is provided to be mounted on the exterior of the vehicle and therefore to undergo the external conditions to the vehicle such as the climate.
  • the optical device 10 comprises a protective casing 12 comprising a wall 15 of generally cylindrical shape extending along the vertical axis V from its top end 18 to its bottom end 20 .
  • the bottom end 20 of the protective casing 12 is closed by a casing bottom 26 .
  • the casing bottom 26 comprises a connector body 28 extending vertically outwardly of the protective casing 12 , the connector body 28 being formed integrally with the casing bottom 26 .
  • the optical device 10 comprises a lens holder 14 extending vertically in the protective casing 12 .
  • the lens holder 14 is an open hollow structure forming a cavity 21 extending from its top end 19 arranged outside the protective casing 12 up to its bottom end 30 inserted in the protective casing 12 .
  • the top end 19 of the lens holder 14 includes an optical lens 22 aligned along the optical axis O of the optical device 10 .
  • the lens holder 14 is held in abutment against the top end 18 of the protective casing 12 .
  • the lens holder 14 therefore comprises a bearing plate 16 arranged in abutment against the top end 18 of the protective casing 12 .
  • the lens holder 14 is fixed by bearing against the top end 18 of the protective casing 12 by means of a first adhesive seal 13 so as to hermetically seal the protective casing 12 .
  • the bearing plate 16 comprises a circular aperture opening onto the cavity 21 of the lens holder 14 and including an upper wall 17 to the protective casing 12 extending vertically up to the top end 19 of the lens holder 14 .
  • the optical lens 22 is arranged against the inner surface of the upper wall 17 and is kept aligned along the optical axis O of the optical device 10 by a holding cap 24 fixed on the upper wall 17 .
  • the lens holder 14 comprises the upper wall 17 arranged above the bearing plate 16 and comprises a lower wall 31 to the protective casing 12 extending vertically from the bearing plate 16 to its bottom end 30 .
  • the bottom end 30 forms a base of generally parallelepiped shape.
  • the optical device 10 comprises a first rigid printed circuit board 32 .
  • the first rigid printed circuit board 32 is of generally rectangular shape.
  • the first printed circuit board 32 comprises, on its upper face, an electronic image-capture circuit 36 aligned with the optical lens 22 along the optical axis O of the optical device 10 .
  • the printed circuit board 32 is provided to be fixed on the bottom end 30 of the lens holder 14 by means of a second adhesive seal 38 , so as to hermetically seal the cavity 21 of the lens holder 14 .
  • the optical device 10 comprises a second rigid printed circuit board 34 .
  • the second rigid printed circuit board 34 comprises, on its lower face, electrical terminals 40 extending vertically and provided to be inserted into the body of the connector 28 .
  • the second printed circuit board 34 is therefore provided to be arranged at the bottom of the casing 26 so that its electrical terminals 40 can be inserted into the body of the connector 28 .
  • the second printed circuit board 34 includes means 42 of electrical connection with the first printed circuit board 32 .
  • the second printed circuit board 34 may comprise electronic image-processing components received from the electronic image-capture circuit 36 .
  • the optical device 10 comprises a flexible heater band 50 .
  • the heater band 50 is configured to be arranged around the lower wall 31 of the lens holder 14 .
  • the lower wall 31 of the lens holder 14 is an annular cylindrical wall. More particularly, the heater band 50 is configured to be wound around the annular lower wall 31 of the lens holder 14 so as to be in contact with the annular wall 31 all around it.
  • the heater band 50 also comprises an electrical connection interface 52 provided to be electrically connected to one of the two rigid printed circuit boards 32 , 34 of the optical device.
  • the electrical connection interface 52 is provided to be electrically connected to the first rigid printed circuit board 32 by means of an electrical connector 63 arranged on the lower face of the first printed circuit board 32 .
  • This choice makes it possible to limit the dimension, more precisely the length, of the electrical connection interface 52 .
  • the heater band 50 is arranged around the lower wall 31 of the lens holder 14 .
  • the heater band 50 is arranged so as to cover the top end 23 of the lower wall 31 of the lens holder 14 so as to be as close as possible to the upper wall of the lens holder 14 provided to receive the optical lens 22 .
  • the heater band 50 comprises electrical conductors 62 configured to be traversed by an electric current coming from the first printed circuit board 32 .
  • the heater band 50 may be a flexible printed circuit board connected by the electrical connection interface 52 to the first printed circuit board 32 .
  • the electrical connection interface 52 may be a connection tab formed integrally with the heater band 50 .
  • the heater band 50 and the associated electrical connection interface 52 may be one and the same T-shaped flexible printed circuit board prior to its assembly on the lower wall 31 of the lens holder 14 .
  • the portion representing the base of the ‘T’ forms the electrical connection interface 52 of the heater band, the head of the ‘T’ forming the flexible heater band 50 configured to be arranged around the lower wall 31 of the lens holder 14 .
  • the electrical connection interface 52 is a thinned portion of the substrate of the first printed circuit board 32 .
  • the heater band 50 , the electrical connection interface 52 and the first printed circuit board 32 may be one and the same printed circuit board of the flex-rigid printed circuit board type (not shown), i.e., a single printed circuit board comprising a flexible portion including the flexible heater band 50 and including the flexible tab forming the electrical connection interface 52 , said flexible portion being in substrate continuity of the rigid main portion.
  • the two longitudinal ends 54 , 56 opposite the heater band are fixed on the lower wall 31 of the lens holder 14 .
  • the two longitudinal ends 54 , 56 include each an adhesive band 53 , 55 of the pressure-sensitive adhesive type so as to be bonded to the lower wall 31 of the lens holder 14 .
  • attachment means 58 of the heater band 50 are arranged on the longitudinal ends 54 , 56 of the heater band 50 .
  • the attachment means 58 may comprise an elastic portion so as to fit to the profile of the wall 31 of the lens holder, the elastic attachment means allowing to compress the heater band 50 against the lower wall 31 of the lens holder 14 .
  • a clamping ring can also be inserted around the heater band 50 in order to pinch the heater band 50 between the clamping ring and the lower wall 31 of the lens holder 14 .
  • FIGS. 6 , 7 , 8 and 9 four steps of assembling the optical device 10 described through FIGS. 1 to 5 are illustrated.
  • a first step consists in providing the first rigid printed circuit board 32 comprising the electronic image-capture component 36 arranged on the lens holder 14 and aligned along the optical axis O of the device 10 .
  • this first step comprises providing the flexible heater band 50 including the electrical connection interface 52 and also the attachment means 58 , in particular the two adhesive bands 53 , 55 each arranged on a longitudinal end 54 , 56 of the heater band. It should be noted that the heater band 50 is presented facing the lens holder 14 in a planar manner, therefore not curved.
  • a second step consists in pressing the flexible heater band 50 in planar configuration against the lower wall 31 of the lens holder 14 . More particularly, one of the two vertical ends of the heater band 50 is arranged as close as possible to, even in contact with, the bearing plate 16 of the lens holder 14 .
  • a third step consists in arranging the heater band 50 all around and in contact with the lower wall 31 of the lens holder 14 .
  • This step is completed by an action of holding the heater band 50 against the lower wall 31 of the lens holder 14 via the attachment means 58 of the heater band 50 .
  • a specific pressure exerted on the longitudinal ends 54 , 56 allows the adhesion of the two adhesive bands 53 , 55 to the lower wall 31 of the lens holder 14 .
  • a step of connecting the electrical connection interface 52 to the first printed circuit board is carried out by insertion of the electrical connection interface 52 , that is to say from the free end of the electrical connection tab, in the electrical connector 63 arranged on the lower face of the first rigid printed circuit board 32 .
  • the step of providing the rigid printed circuit board 32 , the step of providing the heater band 50 and the step of electrically connecting the electrical connection interface 52 to the first rigid printed circuit board 32 are substituted by a single step of providing a single printed circuit board comprising a rigid main printed circuit board including the electronic image-capture component 36 , and comprising a flexible printed circuit board including the flexible heater band 50 and including an extension forming the electrical connection interface 52 , said flexible printed circuit board being in substrate continuity of the rigid main portion.
  • the invention is not limited to an electrical connection of the electrical connection interface 52 by means of an electrical connector 63 . Any other type of fixing, for example by welding, may be suitable for the invention.
  • the invention is also not limited to the electrical connection of the electrical connection interface 52 to the first rigid printed circuit board 32 comprising the electronic image-capture component 36 , but to any other rigid printed circuit board of the optical device, such as the second rigid printed circuit board of the embodiment represented in FIGS. 1 to 5 .

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Optics & Photonics (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Electromagnetism (AREA)
  • Mechanical Engineering (AREA)
  • Studio Devices (AREA)
  • Camera Bodies And Camera Details Or Accessories (AREA)
  • Optical Couplings Of Light Guides (AREA)
US16/442,623 2018-06-18 2019-06-17 Optical device with a flexible heating element Active 2041-07-08 US11653078B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1855337 2018-06-18
FR1855337A FR3082634B1 (fr) 2018-06-18 2018-06-18 Dispositif optique pour vehicule comprenant un element de chauffage

Publications (2)

Publication Number Publication Date
US20190381939A1 US20190381939A1 (en) 2019-12-19
US11653078B2 true US11653078B2 (en) 2023-05-16

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Family Applications (1)

Application Number Title Priority Date Filing Date
US16/442,623 Active 2041-07-08 US11653078B2 (en) 2018-06-18 2019-06-17 Optical device with a flexible heating element

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US (1) US11653078B2 (de)
EP (1) EP3584633A1 (de)
CN (1) CN110618514A (de)
FR (1) FR3082634B1 (de)

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FR3082634B1 (fr) 2018-06-18 2021-10-01 Delphi Tech Llc Dispositif optique pour vehicule comprenant un element de chauffage
FR3082633B1 (fr) 2018-06-18 2021-10-01 Delphi Tech Llc Dispositif optique pour vehicule comprenant un element de chauffage
US10881028B1 (en) * 2019-07-03 2020-12-29 Apple Inc. Efficient heat removal from electronic modules
US11710945B2 (en) 2020-05-25 2023-07-25 Apple Inc. Projection of patterned and flood illumination
CN113905472B (zh) * 2020-07-07 2024-04-12 宁波舜宇车载光学技术有限公司 具有加热装置的镜片以及包括该镜片的镜头
US11474417B2 (en) 2020-08-07 2022-10-18 Lineage Logistics, LLC Lens heater assembly for camera
US11630377B2 (en) * 2020-08-11 2023-04-18 Zf Friedrichshafen Ag Lens assembly
US11699715B1 (en) 2020-09-06 2023-07-11 Apple Inc. Flip-chip mounting of optoelectronic chips
DE102020212251A1 (de) * 2020-09-29 2022-03-31 Robert Bosch Gesellschaft mit beschränkter Haftung Imagermodul für eine Kamera oder einen Sensor
US20230011812A1 (en) * 2021-07-06 2023-01-12 Eterge Opto-Electronics Co., Ltd. Optical imaging lens
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FR3082634B1 (fr) 2021-10-01
CN110618514A (zh) 2019-12-27

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